Population genomic evidence for plant glacial survival in Scandinavia
Quaternary glaciations have played a major role in shaping the genetic diversity and distribution of plant species. Strong palaeoecological and genetic evidence supports a postglacial recolonization of most plant species to northern Europe from southern, eastern and even western glacial refugia. Alt...
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Online Access: | http://hdl.handle.net/11250/2597016 https://doi.org/10.1111/mec.14994 |
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ftninstnf:oai:brage.nina.no:11250/2597016 2023-05-15T14:55:44+02:00 Population genomic evidence for plant glacial survival in Scandinavia Westergaard, Kristine Bakke Zemp, Niklaus Bruederle, Leo P. Stenøien, Hans K. Widmer, Alex Fior, Simone Skandinavia, Scandinavia 2019 application/pdf http://hdl.handle.net/11250/2597016 https://doi.org/10.1111/mec.14994 eng eng Norges forskningsråd: 231120 Molecular Ecology. 2019, 28 818-832. urn:issn:0962-1083 http://hdl.handle.net/11250/2597016 https://doi.org/10.1111/mec.14994 cristin:1681323 © 2018 John Wiley & Sons Ltd 818-832 28 Molecular Ecology arctic–alpine phylogeography Carex scirpoidea ddRAD‐seq demographic inference glacial VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Peer reviewed 2019 ftninstnf https://doi.org/10.1111/mec.14994 2021-12-23T07:17:16Z Quaternary glaciations have played a major role in shaping the genetic diversity and distribution of plant species. Strong palaeoecological and genetic evidence supports a postglacial recolonization of most plant species to northern Europe from southern, eastern and even western glacial refugia. Although highly controversial, the existence of small in situ glacial refugia in northern Europe has recently gained molecular support. We used genomic analyses to examine the phylogeography of a species that is critical in this debate. Carex scirpoidea Michx subsp. scirpoidea is a dioecious, amphi‐ Atlantic arctic–alpine sedge that is widely distributed in North America, but absent from most of Eurasia, apart from three extremely disjunct populations in Norway, all well within the limits of the Weichselian ice sheet. Range‐wide population sampling and variation at 5,307 single nucleotide polymorphisms show that the three Norwegian populations comprise unique evolutionary lineages divergent from Greenland with high between‐population divergence. The Norwegian populations have low within‐population genetic diversity consistent with having experienced genetic bottlenecks in glacial refugia, and host private alleles that probably accumulated in long‐term isolated populations. Demographic analyses support a single, pre‐Weichselian colonization into Norway from East Greenland, and subsequent divergence of the three populations in separate refugia. Other refugial areas are identified in North‐east Greenland, Minnesota/Michigan, Colorado and Alaska. Admixed populations in British Columbia and West Greenland indicate postglacial contact. Taken together, evidence from this study strongly indicates in situ glacial survival in Scandinavia. arctic–alpine phylogeography, Carex scirpoidea, ddRAD‐seq, demographic inference, glacial survival, Pleistocene refugia acceptedVersion Article in Journal/Newspaper Arctic Atlantic Arctic Atlantic-Arctic East Greenland Greenland Ice Sheet Alaska Norwegian Institute for Nature Research: Brage NINA Arctic Greenland Norway Molecular Ecology 28 4 818 832 |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
arctic–alpine phylogeography Carex scirpoidea ddRAD‐seq demographic inference glacial VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
arctic–alpine phylogeography Carex scirpoidea ddRAD‐seq demographic inference glacial VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Westergaard, Kristine Bakke Zemp, Niklaus Bruederle, Leo P. Stenøien, Hans K. Widmer, Alex Fior, Simone Population genomic evidence for plant glacial survival in Scandinavia |
topic_facet |
arctic–alpine phylogeography Carex scirpoidea ddRAD‐seq demographic inference glacial VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Quaternary glaciations have played a major role in shaping the genetic diversity and distribution of plant species. Strong palaeoecological and genetic evidence supports a postglacial recolonization of most plant species to northern Europe from southern, eastern and even western glacial refugia. Although highly controversial, the existence of small in situ glacial refugia in northern Europe has recently gained molecular support. We used genomic analyses to examine the phylogeography of a species that is critical in this debate. Carex scirpoidea Michx subsp. scirpoidea is a dioecious, amphi‐ Atlantic arctic–alpine sedge that is widely distributed in North America, but absent from most of Eurasia, apart from three extremely disjunct populations in Norway, all well within the limits of the Weichselian ice sheet. Range‐wide population sampling and variation at 5,307 single nucleotide polymorphisms show that the three Norwegian populations comprise unique evolutionary lineages divergent from Greenland with high between‐population divergence. The Norwegian populations have low within‐population genetic diversity consistent with having experienced genetic bottlenecks in glacial refugia, and host private alleles that probably accumulated in long‐term isolated populations. Demographic analyses support a single, pre‐Weichselian colonization into Norway from East Greenland, and subsequent divergence of the three populations in separate refugia. Other refugial areas are identified in North‐east Greenland, Minnesota/Michigan, Colorado and Alaska. Admixed populations in British Columbia and West Greenland indicate postglacial contact. Taken together, evidence from this study strongly indicates in situ glacial survival in Scandinavia. arctic–alpine phylogeography, Carex scirpoidea, ddRAD‐seq, demographic inference, glacial survival, Pleistocene refugia acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Westergaard, Kristine Bakke Zemp, Niklaus Bruederle, Leo P. Stenøien, Hans K. Widmer, Alex Fior, Simone |
author_facet |
Westergaard, Kristine Bakke Zemp, Niklaus Bruederle, Leo P. Stenøien, Hans K. Widmer, Alex Fior, Simone |
author_sort |
Westergaard, Kristine Bakke |
title |
Population genomic evidence for plant glacial survival in Scandinavia |
title_short |
Population genomic evidence for plant glacial survival in Scandinavia |
title_full |
Population genomic evidence for plant glacial survival in Scandinavia |
title_fullStr |
Population genomic evidence for plant glacial survival in Scandinavia |
title_full_unstemmed |
Population genomic evidence for plant glacial survival in Scandinavia |
title_sort |
population genomic evidence for plant glacial survival in scandinavia |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2597016 https://doi.org/10.1111/mec.14994 |
op_coverage |
Skandinavia, Scandinavia |
geographic |
Arctic Greenland Norway |
geographic_facet |
Arctic Greenland Norway |
genre |
Arctic Atlantic Arctic Atlantic-Arctic East Greenland Greenland Ice Sheet Alaska |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic East Greenland Greenland Ice Sheet Alaska |
op_source |
818-832 28 Molecular Ecology |
op_relation |
Norges forskningsråd: 231120 Molecular Ecology. 2019, 28 818-832. urn:issn:0962-1083 http://hdl.handle.net/11250/2597016 https://doi.org/10.1111/mec.14994 cristin:1681323 |
op_rights |
© 2018 John Wiley & Sons Ltd |
op_doi |
https://doi.org/10.1111/mec.14994 |
container_title |
Molecular Ecology |
container_volume |
28 |
container_issue |
4 |
container_start_page |
818 |
op_container_end_page |
832 |
_version_ |
1766327763171540992 |